{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT3NU3225AFF000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT3NU3225AFF000XXX","canonicalUrl":"https://aoctrl.com/abb/XT3NU3225AFF000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT3NU3225AFF000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB Tmax XT3 molded case circuit breaker, order code XT3NU3225AFF000XXX, 225 A, 3-pole, 480 VAC, 18 kA interrupting rating, panel mount, thermal-magnetic fixed trip.","salesMarkdown":"## 225 A thermal-magnetic MCCB for panel-mount distribution The ABB XT3NU3225AFF000XXX is a 225 A, 3-pole molded case circuit breaker from the Tmax XT3 family, rated 480 VAC with an 18 kA interrupting capacity at that voltage. Panel-mount construction with front flat terminals suits fixed-mount distribution panels where the breaker is wired directly into the bus rather than plug-in or drawout chassis. ## Sourcing and fit verification The 225 A fixed thermal-magnetic trip unit is non-interchangeable on this variant — the trip setting is factory-set and not field-adjustable, so confirm the continuous load current matches the 225 A rating before specifying. For a panel originally specified around the lower-rated XT1NU3090AFF000XXX (90 A), the XT3NU3225AFF000XXX shares the same Tmax XT platform but uses a larger frame size (XT3 vs XT1) — the mounting footprint and bus connections differ, so a direct drop-in without rewiring is not possible.","metaTitle":"ABB XT3NU3225AFF000XXX Molded Case Breaker, 225A, 18kA","metaDescription":"ABB XT3NU3225AFF000XXX molded case circuit breaker, 225 A, 3-pole, 480 VAC, 18 kA interrupting rating. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Amps":"225","Poles":"3","title":"XT3NU3225AFF000XXX","Mounting":"Panel","Volts AC":"480","description":"Breaker, Molded Case, 225A, 3P, 600Y/347VAC, 18kAIC|Tmax Breaker Frame Size Xt3n 225 Thermal Magnetic Fixed 225-2250, 3-Pole Fixed + Front Flat Terminals","lifecycle_stage":"current","Interrupt Rating AC":"18 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f1bae76a795763128435a0a428b8d524.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the interrupting rating of XT3NU3225AFF000XXX?","answer":"18 kA at 480 VAC, which covers most industrial panelboard fault-current scenarios below that threshold."},{"question":"Will XT3NU3225AFF000XXX drop into a panel built for XT1NU3090AFF000XXX?","answer":"No — the XT3 frame is physically larger than the XT1 frame, so the mounting footprint and bus connections are different. A panel rework is required."},{"question":"Where can I buy XT3NU3225AFF000XXX?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT3NU3225AFF000XXX","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/XT3NU3225AFF000XXX when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}